What is the Least Common Multiple of 13940 and 13960?

Least common multiple or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor.

Least Common Multiple of 13940 and 13960 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 13940 and 13960, than apply into the LCM equation.

GCF(13940,13960) = 20
LCM(13940,13960) = ( 13940 × 13960) / 20
LCM(13940,13960) = 194602400 / 20
LCM(13940,13960) = 9730120

Least Common Multiple (LCM) of 13940 and 13960 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 13940 and 13960. First we will calculate the prime factors of 13940 and 13960.

Prime Factorization of 13940

Prime Factorization of 13960

Now multiplying the highest exponent prime factors to calculate the LCM of 13940 and 13960.

LCM(13940,13960) = 2³ × 5¹ × 17¹ × 41¹ × 349¹
LCM(13940,13960) = 9730120